Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of THURSDAY: FEBRUARY 25 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.3 15.5 47 9.4 18.0 52 COTTONWOOD CREEK 7670 12.5 17.6 71 16.6 22.2 75 GRAND TARGHEE 9260 28.0 -M * 21.8 -M * GRANITE CREEK 6770 7.5 15.5 48 9.8 16.8 58 GRASSY LAKE 7265 17.2 28.4 61 19.6 30.0 65 GROS VENTRE SUMMIT 8750 5.9 11.1 53 5.8 10.4 56 GUNSIGHT PASS 9820 5.8 -M * 7.4 -M * LEWIS LAKE DIVIDE 7850 13.5 28.6 47 16.0 30.4 53 PHILLIPS BENCH 8200 13.3 23.0 58 15.1 23.8 63 SALT RIVER SUMMIT 7760 7.3 11.7 62 9.2 15.3 60 SNAKE RIVER STATION 6920 7.3 15.9 46 12.4 18.9 66 SPRING CREEK DIVIDE 9000 13.8 21.3 65 13.8 21.8 63 THUMB DIVIDE 7980 6.7 14.7 46 9.5 15.4 62 TOGWOTEE PASS 9580 13.3 20.1 66 13.4 20.0 67 TWO OCEAN PLATEAU 9240 15.7 22.6 69 12.7 22.5 56 WILLOW CREEK 8380 17.2 24.5 70 20.6 26.1 79 ----- ----- Basin wide percent of average 59 63 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.5 19.4 59 10.6 16.6 64 BLACK BEAR 8170 20.3 32.0 63 20.3 32.0 63 CANYON 7870 7.1 11.1 64 8.6 12.6 68 FISHER CREEK 9100 19.1 28.8 66 18.5 29.5 63 MADISON PLATEAU 7750 12.3 20.2 61 15.4 21.3 72 NORTHEAST ENTRANCE 7350 4.9 9.5 52 7.6 10.5 72 PARKER PEAK 9400 14.5 17.8 81 10.4 13.3 78 SYLVAN LAKE 8420 10.7 18.4 58 12.9 17.4 74 THUMB DIVIDE 7980 6.7 14.7 46 9.5 15.4 62 TWO OCEAN PLATEAU 9240 15.7 22.6 69 12.7 22.5 56 WHISKEY CREEK 6800 7.8 14.0 56 10.3 16.7 62 WHITE MILL 8700 13.6 19.7 69 12.6 22.0 57 WOLVERINE 7650 6.0 10.4 58 5.8 10.9 53 ----- ----- Basin wide percent of average 63 64 WIND RIVER BURROUGHS CREEK 8750 6.5 12.4 52 5.0 13.3 38 COLD SPRINGS 9630 4.1 7.1 58 5.0 8.2 61 DEER PARK 9700 10.1 14.3 71 11.7 17.3 68 HOBBS PARK 10100 8.7 11.7 74 8.2 9.6 85 LITTLE WARM 9370 5.1 9.3 55 5.7 10.6 54 SOUTH PASS 9040 8.8 13.8 64 9.6 14.6 66 ST. LAWRENCE ALT 8620 3.9 5.8 67 5.7 6.8 84 TOGWOTEE PASS 9580 13.3 20.1 66 13.4 20.0 67 TOWNSEND CREEK 8700 6.4 6.8 94 8.1 8.6 94 ----- ----- Basin wide percent of average 66 66 BIGHORN BASIN BALD MTN. 9380 11.6 15.6 74 8.8 13.7 64 BEAR TRAP MEADOW 8200 4.0 4.2 95 4.4 6.2 71 BLACKWATER 9780 12.3 20.1 61 11.5 16.7 69 BONE SPRINGS DIV 9350 9.1 12.8 71 7.8 11.3 69 EVENING STAR 9200 14.8 24.4 61 16.0 21.1 76 GRAVE SPRINGS 8550 6.8 6.9 99 7.8 7.5 104 KIRWIN 9550 5.6 9.0 62 5.1 8.9 57 MARQUETTE 8760 4.3 6.8 63 5.1 7.3 70 MIDDLE POWDER 7760 7.6 8.7 87 6.2 9.3 67 OWL CREEK 8975 4.4 4.0 110 3.6 4.3 84 POWDER RIVER PASS 9480 -M 8.5 * -M 9.7 * SHELL CREEK 9580 9.4 11.6 81 8.4 10.6 79 SYLVAN LAKE 8420 10.7 18.4 58 12.9 17.4 74 SYLVAN ROAD 7120 5.5 11.0 50 9.2 15.3 60 TIMBER CREEK 7950 2.3 4.1 56 3.7 5.2 71 YOUNTS PEAK 8350 7.6 14.4 53 6.4 13.2 48 ----- ----- Basin wide percent of average 67 70 SHOSHONE RIVER BLACKWATER 9780 12.3 20.1 61 11.5 16.7 69 EVENING STAR 9200 14.8 24.4 61 16.0 21.1 76 KIRWIN 9550 5.6 9.0 62 5.1 8.9 57 MARQUETTE 8760 4.3 6.8 63 5.1 7.3 70 SYLVAN LAKE 8420 10.7 18.4 58 12.9 17.4 74 SYLVAN ROAD 7120 5.5 11.0 50 9.2 15.3 60 YOUNTS PEAK 8350 7.6 14.4 53 6.4 13.2 48 ----- ----- Basin wide percent of average 58 66 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.0 4.2 95 4.4 6.2 71 BIG GOOSE 7990 5.6 7.4 76 6.8 6.6 103 BONE SPRINGS DIV 9350 9.1 12.8 71 7.8 11.3 69 BURGESS JUNCTION 7880 7.6 8.7 87 7.6 9.2 83 CLOUD PEAK RESERVOIR 9860 8.2 9.7 85 7.0 9.5 74 DOME LAKE 8880 5.9 9.3 63 7.9 9.9 80 GRAVE SPRINGS 8550 6.8 6.9 99 7.8 7.5 104 HANSEN SAWMILL 8360 3.9 5.0 78 4.7 6.1 77 MIDDLE POWDER 7760 7.6 8.7 87 6.2 9.3 67 POWDER RIVER PASS 9480 -M 8.5 * -M 9.7 * SUCKER CREEK 8880 8.8 8.8 100 9.5 10.2 93 TIE CREEK 6870 1.9 4.7 40 6.8 7.7 88 ----- ----- Basin wide percent of average 81 82 BELLE FOURCHE BLIND PARK 6890 5.2 6.5 80 8.8 9.0 98 COLE CANYON 5910 4.4 5.5 80 7.5 5.3 142 NORTH RAPID CREEK 6130 7.1 6.5 109 8.5 7.3 116 ----- ----- Basin wide percent of average 90 115 UPPER N. PLATTE RIVER COLUMBINE 9160 15.6 21.1 74 17.3 20.1 86 DIVIDE PEAK 8880 13.8 15.1 91 16.0 16.4 98 ELK RIVER 8700 13.6 15.5 88 14.8 15.5 95 JOE WRIGHT 10120 13.7 16.7 82 15.6 19.4 80 NORTH FRENCH CREEK 10130 27.1 21.8 124 26.4 19.5 135 OLD BATTLE 10000 23.1 25.2 92 25.3 27.3 93 SAGE CREEK BASIN 7850 8.9 8.8 101 9.1 9.5 96 SOUTH BRUSH CREEK 8440 9.3 9.5 98 12.9 12.9 100 TOWER 10500 27.5 36.3 76 24.1 30.8 78 WEBBER SPRINGS 9250 15.7 20.3 77 19.2 21.3 90 WILLOW CREEK PASS 9540 5.4 9.3 58 7.8 10.0 78 ----- ----- Basin wide percent of average 87 93 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.1 18.3 88 16.8 16.9 99 CASPER MTN. 7900 7.4 10.9 68 8.3 10.7 78 DEADMAN HILL 10220 14.6 12.5 117 12.0 12.7 94 DEER PARK 9700 10.1 14.3 71 11.7 17.3 68 LAPRELE CREEK 8375 5.9 8.6 69 8.1 9.6 84 RENO HILL 8400 9.3 10.0 93 10.5 11.1 95 ROACH 9700 12.7 13.4 95 15.6 14.2 110 SAND LAKE 10050 22.8 24.1 95 22.2 18.6 119 SOUTH PASS 9040 8.8 13.8 64 9.6 14.6 66 WINDY PEAK 7900 5.0 5.8 86 7.1 8.2 87 ----- ----- Basin wide percent of average 86 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.4 9.3 90 9.9 11.9 83 DIVIDE PEAK 8880 13.8 15.1 91 16.0 16.4 98 OLD BATTLE 10000 23.1 25.2 92 25.3 27.3 93 SANDSTONE RS 8150 7.8 12.0 65 11.7 15.1 77 WHISKEY PARK 8950 20.2 22.8 89 21.8 22.7 96 ----- ----- Basin wide percent of average 87 91 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.1 11.7 61 7.0 10.9 64 BLIND BULL SUM 8650 11.9 22.2 54 9.3 18.4 51 EAST RIM DIVIDE 7930 4.2 10.6 40 5.6 9.8 57 ELKHART PARK G.S. 9400 6.4 10.7 60 6.8 10.6 64 GROS VENTRE SUMMIT 8750 5.9 11.1 53 5.8 10.4 56 GUNSIGHT PASS 9820 5.8 -M * 7.4 -M * KENDALL R.S. 7740 4.6 11.9 39 6.5 12.1 54 LOOMIS PARK 8240 6.3 13.9 45 8.1 14.3 57 NEW FORK LAKE 8340 4.2 9.3 45 4.8 9.3 52 POCKET CREEK 9360 6.1 -M * 9.1 -M * SNIDER BASIN 8060 7.2 12.0 60 8.3 13.3 62 SPRING CREEK DIVIDE 9000 13.8 21.3 65 13.8 21.8 63 TRIPLE PEAK 8500 13.9 20.1 69 14.8 19.9 74 ----- ----- Basin wide percent of average 55 60 LOWER GREEN RIVER HAMS FORK 7840 5.7 10.5 54 7.3 10.0 73 HEWINTA 9519 5.2 8.7 60 7.3 11.2 65 HICKERSON PARK 9145 5.1 5.6 91 7.1 6.0 118 HOLE-IN-ROCK 9150 4.2 5.4 78 5.9 5.6 105 INDIAN CREEK 9425 13.7 21.4 64 12.3 20.4 60 KELLEY R.S. 8180 7.8 13.4 58 9.9 16.6 60 STEEL CREEK PARK 10200 8.2 12.1 68 9.5 12.4 77 ----- ----- Basin wide percent of average 65 72 UPPER BEAR RIVER BUG LAKE 7950 7.4 16.4 45 10.8 15.6 69 HAYDEN FORK 9212 8.5 12.6 67 11.9 16.5 72 KELLEY R.S. 8180 7.8 13.4 58 9.9 16.6 60 LILY LAKE 9156 7.3 10.4 70 8.6 13.8 62 MONTE CRISTO 8960 13.6 23.6 58 13.9 20.4 68 SALT RIVER SUMMIT 7760 7.3 11.7 62 9.2 15.3 60 TRIAL LAKE 9992 10.4 19.8 53 9.9 19.7 50 ----- ----- Basin wide percent of average 58 63 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. Contact your state water supply staff for assistance. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.